This option allows you to choose to include the associated child waypoints with this export. Check this box to include child waypoints in this export, subject the other following options.

There is also the sub option "And ONLY include child waypoints (no parents)". Check this box if the only waypoints you want exported are the child waypoints associated with the parent waypoints in your filter, but not the parent waypoints themselves.

You can also select to send All child waypoints, only those that have been flagged, or only those that haven't been flagged.